When frog males attempt to attract a mate, their loud calls are competing with other males, and the calls of other species. For the females the noise problem is a little like a lively cocktail party.

A Pacific tree frog (Pseudacris regilla) male calls at Washington state's Conboy Lake National Wildlife Refuge. Cyril Ruoso, Nature Picture Library When ice and snow begin to melt in California's high ...

When ice and snow begin to melt in California's high-elevation waters, male frogs hop into action. Emerging from hibernation, they head to lakes and ponds scattered throughout the area and begin ...